Chinese calendar

The Chinese calendar is a lunisolar calendar formed by combining a purely lunar calendar with a solar calendar. In modern times Chinese usually use the Gregorian Calendar for most day to day activities, but the Chinese calendar is still used for the dating of traditional holidays such as Chinese New Year (Spring Festival) and the Mid-Autumn Festival and in astrology, including choosing the most auspicious date for a wedding or the grand opening of a building. The primary use in day to day activities is for determining the phase of the moon, which is important for farmers and is possible because each day in the calendar corresponds to a particular phase of the month. Other traditional east Asian calendars are similar to if not identical to the Chinese calendar: the Korean calendar is identical, the Vietnamese calendar substitutes the cat for the rabbit in the twelve animals,

Nomenclature

The years are named by a cycle of 10 Heavenly Stems and a cycle of 12 Earthly Branches. Each year is named by a pair of one stem and one branch called a Stem-Branch (干支 gānzhī). The Heavenly Stems are associated with Yin Yang and the Five Elements. Recent 10-year periods began in 1984, 1994, 2004, etc. Earthly Branches are associated with the Twelve Animals. Recent 12-year periods began in 1984, 1996, etc.

Related Topics:
Heavenly Stems - Earthly Branches - Yin Yang - Five Elements - Twelve Animals

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The 60-year cycle formed by combining the two cycles is known as a jiǎzǐ (甲子). It is not 120 because half of the combinations are unused. Jiǎzǐ is named after the first year in the 60-year cycle which is called jiǎzǐ. Some figures of speech use "jiǎzǐ" to mean "a full lifespan"—one who has lived more than a jiǎzǐ is obviously blessed. (Compare the Biblical "three-score years and ten.")

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This 60-year cycle is insufficient for historical references. During the Imperial period, the Nian Hao (Era name of an emperor) was placed in front of the year name for distinction. Example: 康熙壬寅 (Kāngxī rényín) (1662 AD) is the first 壬寅 (rényín) year during the reign of 康熙 (Kāngxī). Using a particular emperor's nian hao was implicit recognition of the legitimacy of that emperor which could be very politically significant in cases of disputed succession or revolt. In addition, it also made it difficult for Chinese historians to avoid taking sides over which dynasty was more legitimate in talking about earlier periods in which China was divided.

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The months, days, and hours can also be denoted using Heavenly Stems and Earthly Branches, though they are commonly addressed using Chinese numerals instead. Together, four Stem-Branch pairs form the Eight Characters (八字 bāzì) used in Chinese astrology.

Related Topics:
Chinese numeral - Chinese astrology

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There is a distinction between a solar year and a lunar year in the Chinese calendar because the calendar is lunisolar. A lunar year (年 nián) is from one Chinese new year to the next. A solar year (歲 suì) is either the period between one "start of spring" and the next or the period between two winter solstices (see Jiéqì section). A lunar year is exclusively used for dates, whereas a solar year, especially that between winter solstices, is used to number the months.

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